Flanagan W. Michael, Chief Scientific Officer at Avidity Biosciences, Inc. ($RNAM), sold shares on the open market six times over the past year, totaling $2.4 million. His most recent sale occurred on January 21, 2026. These sales rank 3,091st among 11,678 individual insiders in our database, where the average is $8.6 million across about 6.4 transactions. He made no open market purchases during this period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Feb. 27, 2026 | Atrium Therapeutics, Inc. | $RNA | Flanagan W. Michael | Not found | A | Stock Option (Right to Buy) | 20000 | $0.00 | 20,000.0000 | 0 | 9999.99% | 0.00% |
| Feb. 27, 2026 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | Chief Scientific Officer | D | Stock Option (Right to Buy) | 72000 | $0.00 | 0.0000 | 150,675,742 | 100.00% | 0.05% |
| Feb. 27, 2026 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | Chief Scientific Officer | D | Stock Option (Right to Buy) | 50000 | $0.00 | 0.0000 | 150,675,742 | 100.00% | 0.03% |
| Feb. 27, 2026 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | Chief Scientific Officer | D | Stock Option (Right to Buy) | 88000 | $0.00 | 0.0000 | 150,675,742 | 100.00% | 0.06% |
| Feb. 27, 2026 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | Chief Scientific Officer | D | Stock Option (Right to Buy) | 96000 | $0.00 | 0.0000 | 150,675,742 | 100.00% | 0.06% |
| Feb. 27, 2026 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | Chief Scientific Officer | D | Common Stock | 150365 | $0.00 | 0.0000 | 150,675,742 | 100.00% | 0.10% |
| Feb. 27, 2026 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | Chief Scientific Officer | D | Stock Option (Right to Buy) | 25000 | $0.00 | 0.0000 | 150,675,742 | 100.00% | 0.02% |
| Feb. 27, 2026 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | Chief Scientific Officer | D | Stock Option (Right to Buy) | 66500 | $0.00 | 0.0000 | 150,675,742 | 100.00% | 0.04% |
| Jan. 21, 2026 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | Chief Scientific Officer | S | Common Stock | 3976 | $72.45 | 87,651.0000 | 150,675,742 | 4.34% | 0.00% |
| Jan. 21, 2026 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | Chief Scientific Officer | S | Common Stock | 2558 | $72.45 | 85,093.0000 | 150,675,742 | 2.92% | 0.00% |
| Jan. 7, 2026 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | Chief Scientific Officer | S | Common Stock | 2373 | $72.23 | 91,627.0000 | 150,675,742 | 2.52% | 0.00% |
| Dec. 17, 2025 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | Chief Scientific Officer | A | Common Stock | 27500 | $0.00 | 107,695.0000 | 150,675,742 | 34.29% | 0.02% |
| Dec. 17, 2025 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | Chief Scientific Officer | F | Common Stock | 13695 | $71.87 | 94,000.0000 | 150,675,742 | 12.72% | 0.01% |
| Sept. 11, 2025 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | Chief Scientific Officer | M | Common Stock | 20000 | $14.22 | 100,195.0000 | 120,212,301 | 24.94% | 0.02% |
| Sept. 11, 2025 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | Chief Scientific Officer | S | Common Stock | 20000 | $38.94 | 80,195.0000 | 120,212,301 | 19.96% | 0.02% |
| Sept. 11, 2025 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | Chief Scientific Officer | M | Stock Option (Right to Buy) | 20000 | $0.00 | 76,500.0000 | 120,212,301 | 20.73% | 0.02% |
| June 11, 2025 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | Chief Scientific Officer | M | Stock Option (Right to Buy) | 20000 | $0.00 | 96,500.0000 | 120,212,301 | 17.17% | 0.02% |
| June 11, 2025 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | Chief Scientific Officer | M | Common Stock | 20000 | $14.22 | 100,195.0000 | 120,212,301 | 24.94% | 0.02% |
| June 11, 2025 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | Chief Scientific Officer | S | Common Stock | 20000 | $32.88 | 80,195.0000 | 120,212,301 | 19.96% | 0.02% |
| March 20, 2025 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | Chief Scientific Officer | S | Common Stock | 11780 | $31.06 | 80,195.0000 | 120,212,301 | 12.81% | 0.01% |
| March 11, 2025 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | Chief Scientific Officer | M | Stock Option (Right to Buy) | 20000 | $0.00 | 116,500.0000 | 120,212,301 | 14.65% | 0.02% |
| March 11, 2025 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | Chief Scientific Officer | M | Common Stock | 20000 | $14.22 | 111,975.0000 | 120,212,301 | 21.75% | 0.02% |
| March 11, 2025 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | Chief Scientific Officer | S | Common Stock | 20000 | $30.13 | 91,975.0000 | 120,212,301 | 17.86% | 0.02% |
| Jan. 21, 2025 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | Chief Scientific Officer | S | Common Stock | 1812 | $28.59 | 91,975.0000 | 0 | 1.93% | 0.00% |
| Jan. 21, 2025 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | Chief Scientific Officer | S | Common Stock | 3860 | $28.60 | 93,787.0000 | 0 | 3.95% | 0.00% |
| Jan. 6, 2025 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | Chief Scientific Officer | A | Common Stock | 25000 | $0.00 | 97,647.0000 | 0 | 34.41% | 0.00% |
| Jan. 6, 2025 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | Chief Scientific Officer | A | Stock Option (Right to Buy) | 50000 | $0.00 | 50,000.0000 | 0 | 9999.99% | 0.00% |
| Dec. 18, 2024 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | CSTO | S | Common Stock | 12742 | $32.66 | 72,647.0000 | 0 | 14.92% | 0.00% |
| Dec. 11, 2024 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | CSTO | S | Common Stock | 24000 | $35.77 | 85,389.0000 | 0 | 21.94% | 0.00% |
| Dec. 11, 2024 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | CSTO | M | Stock Option (Right to Buy) | 24000 | $0.00 | 86,000.0000 | 0 | 21.82% | 0.00% |
| Dec. 11, 2024 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | CSTO | M | Common Stock | 24000 | $22.47 | 109,389.0000 | 0 | 28.11% | 0.00% |
| Oct. 1, 2024 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | CSTO | M | Common Stock | 62500 | $26.75 | 147,889.0000 | 0 | 73.19% | 0.00% |
| Oct. 1, 2024 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | CSTO | M | Stock Option (Right to Buy) | 62500 | $0.00 | 25,000.0000 | 0 | 71.43% | 0.00% |
| Oct. 1, 2024 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | CSTO | S | Common Stock | 62500 | $47.62 | 85,389.0000 | 0 | 42.26% | 0.00% |
| Sept. 23, 2024 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | CSTO | S | Common Stock | 11847 | $43.89 | 85,389.0000 | 0 | 12.18% | 0.00% |
| Sept. 19, 2024 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | CSTO | A | Common Stock | 25000 | $0.00 | 97,718.0000 | 0 | 34.38% | 0.00% |
| Sept. 19, 2024 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | CSTO | A | Common Stock | 25000 | $0.00 | 85,871.0000 | 0 | 41.07% | 0.00% |
| Sept. 23, 2024 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | CSTO | S | Common Stock | 13153 | $44.00 | 72,718.0000 | 0 | 15.32% | 0.00% |
| Sept. 11, 2024 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | CSTO | S | Common Stock | 62500 | $40.40 | 75,765.0000 | 0 | 45.20% | 0.00% |
| Sept. 11, 2024 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | CSTO | M | Common Stock | 34000 | $22.47 | 109,765.0000 | 0 | 44.88% | 0.00% |
| Sept. 11, 2024 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | CSTO | S | Common Stock | 34000 | $40.40 | 75,765.0000 | 0 | 30.98% | 0.00% |
| Sept. 11, 2024 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | CSTO | S | Common Stock | 14894 | $40.40 | 60,871.0000 | 0 | 19.66% | 0.00% |
| Sept. 11, 2024 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | CSTO | M | Stock Option (Right to Buy) | 62500 | $0.00 | 87,500.0000 | 0 | 41.67% | 0.00% |
| Sept. 11, 2024 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | CSTO | M | Stock Option (Right to Buy) | 34000 | $0.00 | 110,000.0000 | 0 | 23.61% | 0.00% |
| Sept. 11, 2024 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | CSTO | M | Common Stock | 62500 | $26.75 | 138,265.0000 | 0 | 82.49% | 0.00% |
| June 17, 2024 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | CSTO | A | Common Stock | 25000 | $0.00 | 60,871.0000 | 0 | 69.69% | 0.00% |
| June 17, 2024 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | CSTO | A | Common Stock | 25000 | $0.00 | 75,765.0000 | 0 | 49.25% | 0.00% |
| June 18, 2024 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | CSTO | S | Common Stock | 10106 | $39.13 | 50,765.0000 | 0 | 16.60% | 0.00% |
| Jan. 22, 2024 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | CSTO | S | Common Stock | 4129 | $10.13 | 35,871.0000 | 0 | 10.32% | 0.00% |
| Jan. 20, 2024 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | CSTO | A | Stock Option (Right to Buy) | 88000 | $0.00 | 88,000.0000 | 0 | 9999.99% | 0.00% |
| Jan. 20, 2024 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | CSTO | A | Common Stock | 20000 | $0.00 | 20,290.0000 | 0 | 6896.55% | 0.00% |
| Sept. 11, 2023 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | CSTO | A | Stock Option (Right to Buy) | 72000 | $0.00 | 72,000.0000 | 0 | 9999.99% | 0.00% |
| Jan. 20, 2023 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | Chief Technical Officer | A | Stock Option (Right to Buy) | 144000 | $0.00 | 144,000.0000 | 0 | 9999.99% | 0.00% |
| Jan. 20, 2023 | Avidity Biosciences, Inc. | $RNAM | Flanagan W. Michael | Chief Technical Officer | A | Common Stock | 40000 | $0.00 | 40,290.0000 | 0 | 9999.99% | 0.00% |